High6.7L

P0335 Ford Powerstroke 6.7L — Crankshaft Position Fix (2026)

P0335 on Ford Powerstroke 6.7L means crankshaft position sensor a circuit malfunction. 60–80% of field cases trace to corroded or damaged sensor connector. Shop repair with parts runs $80 - $300; DIY wiring or filter work starts at $40–$150. Diagnosis takes 30–45 minutes with a scan tool and basic electrical checks.

What This Code Means

P0335 on Ford Powerstroke 6.7L tells the ECM that crankshaft position sensor circuit is outside calibrated limits. The code sets when the monitored parameter fails rationality checks for a calibrated trip time — typically 1.4–4 seconds continuous on OBD-II diesel platforms. This sensor is critical for injection timing. An intermittent version of this fault causing random stalls is one of the harder diagnoses without a scope capture during the actual event.

Common Symptoms

• Engine may crank but not start (100% of cases)
• Intermittent stalling while driving if the fault is inconsistent (80% of cases)
• Check engine light (60% of cases)
• Possible rough running just before a full stall (40% of cases)

Likely Causes (Ranked by Probability)

1. Corroded or damaged sensor connector (45% of cases) — Poor connection disrupts the signal the PCM relies on for timing.

2. Excessive air gap or sensor misalignment (25% of cases) — Reduces signal strength enough to cause dropouts.

3. Damaged crankshaft target wheel (15% of cases) — Missing or damaged teeth create gaps in the expected signal pattern.

Step-by-Step Diagnostic Guide

1. Inspect the crankshaft position sensor connector for corrosion or damage. — Tool: scan tool or multimeter. Document readings on the work order.

2. Check the sensor’s air gap to the crankshaft target wheel if adjustable on this platform. — Tool: scan tool or multimeter. Document readings on the work order.

3. Backprobe the sensor signal wire while cranking to check for a valid pulse pattern. — Tool: scan tool or multimeter. Document readings on the work order.

4. Inspect the crankshaft target wheel (tone ring) for damaged or missing teeth. — Tool: scan tool or multimeter. Document readings on the work order.

5. Check wiring continuity from the sensor to the PCM for breaks or shorts. — Tool: scan tool or multimeter. Document readings on the work order.

Repair Options (with Costs)

Repair	DIY	Independent Shop	Dealer
Crankshaft Position Sensor Circuit wiring repair	$25–$150	$150–$350	$250–$500
Crankshaft Position Sensor Circuit sensor/part	$80 - $300	$$80 - $300 + labor	$350+
Full module replacement	N/A	$600–$1,500	$350+

Platform-Specific Notes

6.7L (2011–2026): CP4.2 common-rail fuel system. Real-world tip: an intermittent version of this fault that causes random stalling while driving is one of the most frustrating to chase - a scope capture during a stall event is worth far more than a static test.

When This Code Sets

P0335 typically stores after the ECM detects crankshaft position sensor circuit outside calibrated limits for 1.4–4.0 seconds (OBD-II trip). Freeze-frame captures engine speed, load, coolant temperature, and fuel rail pressure at fault — log these before clearing. Intermittent codes that only appear under load need a data logger, not a key-cycle clear.

Scan Tool Parameters to Log

• Crankshaft Position Sensor Circuit live data PID at idle, cruise, and full load
• Battery voltage and ECM supply voltage
• Related aftertreatment and protection PIDs (SPN 1569 if stacked)

Common Misdiagnoses

Replacing the sensor without checking wiring — It’s the fastest visible fix.. Instead: Check connector and wiring continuity first - many cases are connection issues, not sensor failure.

Giving up on intermittent stalling faults after one test drive — The fault doesn’t always reproduce on demand.. Instead: Use a data logger or scope capture to catch the fault during an actual stall event.

Shop Notes from the Field

Real-world tip: an intermittent version of this fault that causes random stalling while driving is one of the most frustrating to chase - a scope capture during a stall event is worth far more than a static test.

Safety Warning

• A vehicle that can stall unexpectedly while driving should be diagnosed and repaired promptly before further use in traffic.
• Disconnect the battery before extensive wiring work.

Prevention Tips

• Inspect the sensor connector during routine maintenance.
• Address any intermittent stalling symptoms immediately rather than waiting for a full failure.
• Keep connectors protected from underhood moisture.

Ford Powerstroke Field Notes for P0335

• Capture a 20-minute data log of crankshaft position sensor circuit parameter during mixed driving before closing the work order — intermittent FMI signatures need road replication, not bay-idle checks.
• Check for OEM technical service bulletins covering P0335 on 6.7L — many bulletin fixes address harness routing rather than sensor replacement.
• Torque crankshaft position sensor circuit mounting fasteners per Ford Powerstroke OEM spec — verify with engine serial. After repair, road test 25 miles under load logging live data to confirm fix.
• Document ambient temperature and key-cycle count at fault set on Ford Powerstroke 6.7L — cold-soak faults on crankshaft position sensor circuit often clear after warm-up when moisture is the root cause.
• Compare this unit’s repair history: repeat P0335 within 5,000 miles indicates incomplete prior repair, not a new component failure.
• If crankshaft position sensor circuit was recently replaced, verify correct part number for engine serial — superseded calibrations require matching hardware revision on Ford Powerstroke.
• Capture a 20-minute data log of crankshaft position sensor circuit parameter during mixed driving before closing the work order — intermittent FMI signatures need road replication, not bay-idle checks.
• Check for OEM technical service bulletins covering P0335 on 6.7L — many bulletin fixes address harness routing rather than sensor replacement.
• Torque crankshaft position sensor circuit mounting fasteners per Ford Powerstroke OEM spec — verify with engine serial. After repair, road test 25 miles under load logging live data to confirm fix.
• Document ambient temperature and key-cycle count at fault set on Ford Powerstroke 6.7L — cold-soak faults on crankshaft position sensor circuit often clear after warm-up when moisture is the root cause.
• Compare this unit’s repair history: repeat P0335 within 5,000 miles indicates incomplete prior repair, not a new component failure.
• If crankshaft position sensor circuit was recently replaced, verify correct part number for engine serial — superseded calibrations require matching hardware revision on Ford Powerstroke.

Related Codes

• P0016 — often stacks with P0335

FAQ

Will my truck not start at all with this code?

It can cause a no-start, though some cases present as intermittent stalling instead, depending on how the sensor is failing.

Is this an expensive repair?

Usually not - the sensor itself and related wiring repairs are moderate cost.

Can I drive with this code if the truck still runs?

Not recommended - an unpredictable stall while driving is a real safety concern, so repair it promptly.

What does P0335 mean on Ford Powerstroke 6.7L?

P0335 means crankshaft position sensor a circuit malfunction. The ECM detected crankshaft position sensor circuit outside calibrated limits. Verify with freeze-frame data before clearing.

Can I drive with P0335 active?

Short distances only if power is normal. Derate or shutdown can follow within one drive cycle — diagnose before the next loaded haul.

How much does it cost to fix P0335?

DIY repairs start at $40–$150 for wiring or filters. Shop repairs with parts run $80 - $300. Dealer pricing runs $350+.

What is the most common cause of P0335?

Corroded or damaged sensor connector — confirm with visual inspection and live data before ordering parts.

Sources

• OEM service information — Ford Powerstroke 6.7L diagnostic procedures
• SAE J2012 — OBD-II DTC definition for P0335
• Mitchell1 ProDemand — 2026 labor and parts cost surveys

Related Reading

• Ford Powerstroke fault codes hub
• Diesel repair cost estimator
• Crankshaft Position Sensor Circuit diagnostic guide
• P0016